<template>
  <view>
    <view class="search-box">
      <uni-search-bar :focus="true" :radius="100" cancelButton="none" @input="input" />
    </view>
    <view class="sugg-list" v-if="searchResults.length !==0">
      <view class="sugg-item" @click="gotoDetail(item)" v-for="(item,i) in searchResults" :key="i">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>
    <view class="history-box" v-else>
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="clean"></uni-icons>
      </view>
      <view class="history-list" >
        <uni-tag @click="clickHistory(item)" :text="item" v-for="(item,i) in historyies" :key="i"></uni-tag>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer:null,
        kw : '',
        searchResults:[],
        historyList:[]
      };
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
      
    },
    methods:{
      input(e){
        clearTimeout(this.timer)
        this.timer = setTimeout(()=>{
          this.kw = e
          this.getSearchList()
        },500)
      },
      async getSearchList(){
        if(this.kw.length === 0){
          this.searchResults = []
          return
        }
        const { data:res } = await uni.$http.get('/api/public/v1/goods/qsearch',{ query:this.kw })
        if(res.meta.status!==200) return uni.$showMsg()
        this.searchResults = res.message
        this.saveSearchHistory()
      },
      gotoDetail(item){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      },
      saveSearchHistory(){
        // this.historyList.push(this.kw)
        const set = new Set(this.historyList)
        set.delete(this.kw)
        set.add(this.kw)
        this.historyList = Array.from(set)
        uni.setStorageSync('kw',JSON.stringify(this.historyList))
      },
      clean(){
        
        this.historyList = []
        uni.setStorageSync('kw','[]')
      },
      clickHistory(item){
        this.kw = item
        this.getSearchList()
      }
    },
    computed:{
      historyies(){
        return [...this.historyList].reverse()
      }
    },
    
  }
</script>

<style lang="scss">
.search-box{
  position: sticky;
  top:0;
  z-index: 999;
}
.sugg-list{
  padding: 0 5px;
  .sugg-item{
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size:12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    .goods-name{
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
  }
}
.history-box{
  padding: 0 5px;
  .history-title{
    display: flex;
    justify-content: space-between;
    height: 40px;
    align-items: center;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }
  .history-list{
    display: flex;
    flex-wrap: wrap;
    uni-tag{
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
